73138506453 has 12 divisors (see below), whose sum is σ = 105697384000. Its totient is φ = 48734600616.

The previous prime is 73138506373. The next prime is 73138506499. The reversal of 73138506453 is 35460583137.

73138506453 is a `hidden beast` number, since 7 + 3 + 138 + 506 + 4 + 5 + 3 = 666.

It is not a de Polignac number, because 73138506453 - 2¹² = 73138502357 is a prime.

It is a super-2 number, since 2×73138506453² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73138506399 and 73138506408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73138506053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2014651 + ... + 2050632.

Almost surely, 2^73138506453 is an apocalyptic number.

It is an amenable number.

73138506453 is a deficient number, since it is larger than the sum of its proper divisors (32558877547).

73138506453 is a wasteful number, since it uses less digits than its factorization.

73138506453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067288 (or 4067285 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 73138506453 in words is "seventy-three billion, one hundred thirty-eight million, five hundred six thousand, four hundred fifty-three".